257386428

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{113}}^1\times {\mathrm{157}}^1$

素因数の和:324

約数の個数: 144

約数和(自身を含む): 734313216

約数和(自身を除く): 476926788

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 31, 36, 39, 52, 62, 78, 93, 113, 117, 124, 156, 157, 186, 226, 234, 279, 314, 339, 372, 403, 452, 468, 471, 558, 628, 678, 806, 942, 1017, 1116, 1209, 1356, 1413, 1469, 1612, 1884, 2034, 2041, 2418, 2826, 2938, 3503, 3627, 4068, 4082, 4407, 4836, 4867, 5652, 5876, 6123, 7006, 7254, 8164, 8814, 9734, 10509, 12246, 13221, 14012, 14508, 14601, 17628, 17741, 18369, 19468, 21018, 24492, 26442, 29202, 31527, 35482, 36738, 42036, 43803, 45539, 52884, 53223, 58404, 63054, 63271, 70964, 73476, 87606, 91078, 106446, 126108, 126542, 136617, 159669, 175212, 182156, 189813, 212892, 230633, 253084, 273234, 319338, 379626, 409851, 461266, 546468, 549971, 569439, 638676, 691899, 759252, 819702, 922532, 1099942, 1138878, 1383798, 1639404, 1649913, 2075697, 2199884, 2277756, 2767596, 3299826, 4151394, 4949739, 6599652, 7149623, 8302788, 9899478, 14299246, 19798956, 21448869, 28598492, 42897738, 64346607, 85795476, 128693214, 257386428]

約数ペア:

[(1, 257386428), (2, 128693214), (3, 85795476), (4, 64346607), (6, 42897738), (9, 28598492), (12, 21448869), (13, 19798956), (18, 14299246), (26, 9899478), (31, 8302788), (36, 7149623), (39, 6599652), (52, 4949739), (62, 4151394), (78, 3299826), (93, 2767596), (113, 2277756), (117, 2199884), (124, 2075697), (156, 1649913), (157, 1639404), (186, 1383798), (226, 1138878), (234, 1099942), (279, 922532), (314, 819702), (339, 759252), (372, 691899), (403, 638676), (452, 569439), (468, 549971), (471, 546468), (558, 461266), (628, 409851), (678, 379626), (806, 319338), (942, 273234), (1017, 253084), (1116, 230633), (1209, 212892), (1356, 189813), (1413, 182156), (1469, 175212), (1612, 159669), (1884, 136617), (2034, 126542), (2041, 126108), (2418, 106446), (2826, 91078), (2938, 87606), (3503, 73476), (3627, 70964), (4068, 63271), (4082, 63054), (4407, 58404), (4836, 53223), (4867, 52884), (5652, 45539), (5876, 43803), (6123, 42036), (7006, 36738), (7254, 35482), (8164, 31527), (8814, 29202), (9734, 26442), (10509, 24492), (12246, 21018), (13221, 19468), (14012, 18369), (14508, 17741), (14601, 17628)]